Abstract: A two-stages hydraulic booster device for mold functional components includes a first hydraulic control one-way valve serially connected between the solenoid directional control valve and the pumping chamber of the supercharger via a first oil passage; a second hydraulic control one-way valve serially connected between the solenoid directional control valve and the pressure accumulating chamber of the supercharger via a second oil passage. The solenoid directional control valve simultaneously supplying oil to the first and second hydraulic control one-way valves via the first and second oil passages, respectively, and the pressure for opening the second hydraulic control one-way valve is larger than that of the first hydraulic control one-way valve, thereby moving the back pressure formed in the first oil passage to open the second hydraulic control one-way valve to drive the piston to transform the low pressure oil into high pressure oil to move the mold functional components.

Abstract: The disclosure of the present invention describes a hydraulic pump including a frame, a pump shaft capable of being rotated by a thermal or electric motor around an axis which is stationary with respect to the frame, an eccentric sleeve engaged with the pump shaft, at least one stage of pistons arranged to be stationary with respect to the frame and radially extending in pump cylinders defining chambers, and at least one tappet extending in a housing made in the eccentric sleeve and cooperating with at least one resilient means, having a resilience varying according to the load of the downstream circuit emerging at the level of the pump chambers, the tappet actuating means which decrease the piston stroke.

Abstract: This hydraulic pump includes a frame, a pump shaft capable of being rotated by a thermal or electric motor, around an axis which is stationary with respect to the frame, an eccentric sleeve engaged with the pump shaft, and at least one stage of pistons arranged to be stationary with respect to the frame and radially extending in pump cylinders defining chambers. It comprises at least one tappet extending in a housing made in the eccentric sleeve and cooperating with at least one resilient means, having a resilience varying according to the load of the downstream circuit emerging at the level of the pump chambers, said tappet actuating means which decrease the piston stroke.

Abstract: A hydraulically controlled self-contained multi-functional hand tool including a hydraulic ram portion with a rod that activates two blades or arms. The blades articulate about a common pin and are mounted on a fork joint which is securely fixed to the body of the ram. Opening and closing of the blades is achieved by means of a system of links controlled directly by the rod associated with the hydraulic ram. The movement of the blades is obtained by means of an assembly which is integrated into the body of the tool. Said assembly includes an electric motor powered by a battery; drive means for compressing a fluid contained within a leaktight chamber, and a flexible membrane arranged in the chamber to compensate for fluid volume differences and to prevent formation of a vacuum in the chamber when fluid is moved to activate the tool.

Abstract: A control system for hydro-massage tub systems in which water is circulated through a pump and heater from the tub back to a plurality of jets in the tub to create a turbulent massaging action. The system is comprised of an activating device, a pump, a switch activating circuit, a heater with proportional control and a water level sensing safety system. The pump is controlled by a switching and timing circuit that limits the time the pump is on which is slaved to a heater control circuit to prevent operation of the heater unless the pump is circulating water. The proportional heater control circuit maintains the water temperature within a degree or two of a preset temperature by proportionally reducing power as the temperature approaches the preset limit. The activating device transmits a ignal to the switching and timer circuit when a mechanical plunger isolated from electrical circuits is operated.

Abstract: A nozzle jet cartridge assembly for whirlpool bathtubs and the like in which an eyeball or spherical nozzle jet is mounted in a cylindrical housing. The spherical nozzle jet is positioned in the housing by a retaining ring and spring and the housing is closed by a locking ring. This assembly provides a nozzle jet cartridge which can be easily installed in a socket provided by a coupling fitting a hole in the wall of a whirlpool tub. An interchangeable trim ring and a locking nut secure the nozzle jet cartridge assembly to the tub wall.